Cooking range



I E. c.' HOFFMANN COOKING RANGE' Fild Deo. 24, 1925 July 6 O Q .4K

-S www@ .Patented July 6,1925,"

4 '1,591,040 AUIWVTJE'?STATES.- 1

This invention relate-ls to improvements in cooking rangesandconsistsinthe novel con-j struction hereinafterdisclosed.

An object o fthe invention isto providea' rangefhaving asheet metal body.withl a multiplel ply lining. including liner plates so Yde-- signed asto form airpockets adjacent to the v inner surfaceof a portionof the.body, with a layer ofmaterial such as asbestos to insufl late the bodyagainstjheat, anda retaining plate"for the lining-. provided 'with .airpockets Y Another object ofthe invention-.is to vide in a range, amultiple vply l1n1ng that Vis eifectiveffor insulating the b ody of.

the range to protect the body againstv heat, and, at the same time,preventing y rusting out or deterioration of the metallic` walls of thebody. Y

' VAdditional advantages f .tion will be'apparent from.thefollowing de-`tailed description thereof,.taken in connection with Vthe accompanyingdrawing, .in

n range;

which. i Y- Fig. 1 is; a "vertaal section 'through the l Fig. 2 is crossof Fig. 1;

. Fig. 3 is alvertical.section-:throughaapori' tionvof thelining on .anenlarged fscale; jv Q r Fig. fisfa faceview of one'ofthe liner1 plates;and

Fig. 5 is a face view of one the 1 retainfzing plates...L

' Inthe embodiment the invention illus-j, Vtrated in the drawing,whi chit will befunderstood is only a preferred illustration,` the.

Vinvention being applicable to allclasses of stoves, the particularrangeV illustrated is of the leg type of rangecomprisinga. base 1.fsupportedrbytlegs 2.; The range body 3' comprises outer casing bottomand side walls'. of sheetfmetal, either sheet iron orsheetg steel.Within thebody near .one side is thel .lire box 4 vwhichisseparatedffrom the-ash',

box 5 by -grates `6,. th e sides ofthelfire `box!` v being` providedywith the usual liners.Y .5.; y'Adjacent to andextending laterally fromKVthe fire and'ash `box 'section offthera'nge isi a Vrectangular -sheetmetal ovenA 8f-which Vis spaced from the walls of thehousingsoas toprovide aroun'd thetop end'land bottom i' wall thereof, and'in the.space between the same Land the range body, a smokeVflue-whiu'licommunicates with the smoke pipelthru an opening inthezpalgcfifftne 'tangens'. gaf.

i of the construc.

4section'on the line 2-.2 l y n V the vvertical'lo-weredge'ofthesection'llv andy extends transversely of thefrangev to the edge r' ofthesmoke pine near the bottom. f y T he outer. side wall `of the 'flue hasanother Sectlon `13 which maygbernadein' morethanz. ionefdivisionj ifdesired.'v Along thefbottom wall .of the flue 'is a section 14 whichmeetsV avertical section ligthat extends `from front:4 'toure'arxofjtherangejl In practice, there will AV .continuousip assage of the productof combustion'through the flue of vthe range reflue.` Moreover, the heatfromthe fluefnormally desired for theheating of theoven is d1ssipated,lunless the exterioriiue wallsl are satisfactorily heatinsulated.L -f' Js l v rior walls of the 'flue have been "employed,

c 65 f "The practice of. heat insulating vthe extef,

asbestos being" used in some instances for 'l vrthat purpose;yvBut'inthe present-,construcftion, additionahheat insulation is providedYby. the multiplcply lining for-the fluel by formingairpoclrets betweenthe interior Y surface of the rangebody and a liner. plate,

(retaining platehaving air vpockets therein.` l.

" The lining ismadevof convenient sections.

andlgalso Vproviding anv internal In the embodiment shown, the back wallof the flue is vlined bv `a sectionilO-disposed horij4 z ontally7 fromthe edgeof the vsi'fnoke'pipel to awpoint spacedfromthe 'end wallof therange, Vso astoaccommodate a verticalsec; tion llextending to the bottomw'alljof the;

range.A Another horizontal section 1,2lmeets' be another sectioncorresponding subs`tan .y

tially to. the section 12 located againstfthe .front wall of thelrangebody to'coinplete f "It will be noted filati-helga @Hawaii of; the ovenhas an extension lfagainst'which v .the-section .15abuts, closing the jend ofthe;

fiue'jand. directing the product sjof combusvtion rearwardly into the`opfeningftol` the' smoke gpipe."k The bottom walljof Athe ashboxfalsohas a yliner section thatis .formed f substantially-as. are theVliner vplatesfor the flue liner.

The ,multiple .plyiine Cipnse afflitta pl-atel, one of which is shownVin detailfin'v Fig. 4, from ywhich vit will be vunderstood to compriseasuitably dimensioned plate hav-j ing emarginati flange 18, a series .ofspaced.; verdeel aange@ i9; .este ,er tiene@ verse flanges 20. Theflanges form a series of air pocket-s andthe edges of the flanges aresubstantially in the same plane, vso 'that the liner plate is 'fittedclose against the inner wall of the sheet metalbody of the range,

forming air pockets between .the Vexterior range wall, which pocketsserve as dead air spaces preventing outward heat transfer and alsopreventing formation of moisture on the internal surface of the rangebody, thus providing against the rusting vthrough of the walls of therange body The inner face of the plate 17 is smooth.

l A flat/layer 2l of asbestos, or other suitable heat insulatingmaterial, isk arranged to fit 7 against this inner flat kface of theliner plate- 17. The heat insulating layer 2l servesto prevent heattransfer outwardly from the flue passage.` i

Against the inner` face of the layer of heat insulating material is aretainer plate, as shown in Fig. 5', of which yit will appear that itcomprises an outer wall 22 having a series of depressions 23 in one facethereof.` These depressions lform air pockets when the 're-v tainingplate is assembled against the inner face of the layer of heatinsulating material,

as will clearlyfappear vfrom Fig. 3, at being understood that the faceof the plate 22 inV which the de ressions are formed lies ad-` jacent tothe ayer of heat insulating mate-` rial. The separate plies ofthe linersections are secured together and the same are attached in place againstthe wall ofthe range body by bolts 24 that pass through registeringopenings in the range wall and in the y separateplies of the linersections, said bolts being equipped with nuts 25 on their inner ends. oThat portion of; the bottom wall of the range that llies beneath the ashboX lhas a liner which is formed from a plate formedv in'tlie samemanner as the liner plate 17, thereby forming air pockets lthat are sutiiycient without the use of the heatinsula'ting layer to insulate thebottom of the ash'box' sufficiently to prevent'scorching of the floorbeneath the range aty this area. This ash vbox liner is made of aseparate .section Vand bolted to the bottom wall of the range body bythe bolts 24'having nuts 25.

Iam aware that the construction ,may be modified without departure from.the Spirit.v

and scope-of the invention, and I do notAlim- 1tV myself to unessentialdetails thereof.

What I claim and desire to secure byy Letters .Patent is I p l. A krangehaving the outer body formed froml sheet metal materiala linerplatefhavf ing an inner flat face, ,and an outer face having air pocketsformed therein, saidA outer face abutting against the inner face of therange body wall, a layer ofheat in-` sulating material disposedagainstff the kin-` ner wall of said liner plate, and means forretaining said elements together and in con# nection with therange-bodywall.v i

2. A range having the outer body7 Vformed from sheet metal ,niateriaL aliner plate having an inner flat face, and an outer face. having airypockets formed therein, said outer face abutting'against the inner facevof the range body wall, a layer of heat insulating material disposedagainst the inner wall of said liner plate, a retaining plate having'airpockets formed in one'wall theren of which abuts aga-inst the inner faceof said layer of'lieat insulating material, and

means for retaining said elements together` and in connectionwith therange body wall. 3. A range having the outer body thereot` formed ofmetallic walls, said range having a smoke flue, one wall of which'comprises a;

portion yof the outer body of the' range, a plurality of liner sectionsfor the portion of the range constituting the outer wall of the' flue,each liner section comprising a layer of heatV insulating material,y a'liner plate between the heat insulating'material and .the internal Wallofthe range body,saidy liner plate forming with the inner walll of' thebody a plurality of air pockets, and

plate between the' heat*insulatingimaterial VVand the internal wall ofthe range body,v

said :liner plate-forming withr the 'inner wall -of the body a puralityof air `pocl etsan` internal lretaining vmember disposed v'against theinner face of the layer of heat insulating material, and means forretaining'the liner 'layers together andy in connection with thel rangebody. i i

-5. A rrange having the outer body thereof formed of metallic walls,said rangevhaving Il@ Y a smoke flue, one wall ofwhich comprises a Yportion of the outer body of the range, a

y plurality of liner sections 'for the portion of the range constitutingthel outer wall ofthe flue, eachliner section comprising a layerof heatinsulating material, a liner plate between theheat insulatinggmaterialand the interna-l wall ofthe'range fbody, said liner plate forming withthe inner wall of the body a plurality of air pockets,.a retaining platedesignedto abut against-the' inner face of the layer of heat insulatingmateriahsaid retaining plate having recesses therein forming with theface of the heat insulating layer a plurality of air pocketsand meansfor retaining the liner layers to ether and in connection with"the'range bo y. j

' nal wall of the range and between said layer Y (i.l In Va range,l.including outer metallic.k

walls, an oven, a Eire boX arranged adjacent to the oven, an ash boxbelow Said fire box', a liner for that section of the range constituting the flue passage comprising a multipleply structure having anintermediate layer of heat insulating material, and air pockets formedby said liner and the interand the flue passage. 7. In a range,including outer metallic Walls, van oven, a fire box arranged adjacentAto the oven, an aslikb-ozf below Said fireboX7` a liner for thatsectionof the range constiftuting the flue passage comprising a mul- *Vtipleply structure having an interinediater.,

layer of hea-tv insulating material, airpocketsbetween said layerand theinternal wall;

of the range and between layer and the flue passage, and a liner belowthe aslibox, said liner having -spacedfribs forming walls vcfa pluralityof air pockets between Vthe wall of the range and saidliner. e c l i`EINARD HCHTlTMANl;`

